Adjustable Dose Reusable Pen Injector

High-Precision Multi-Dose Metal Injection Device for 3mL Cartridges

Our Adjustable Dose Reusable Pen Injector is a premium-grade medical delivery device engineered for reliable, repeatable, and precise dosing. Designed with a full-metal housing, advanced internal drive mechanism, and highly accurate dose selector, this pen is ideal for pharmaceutical companies, wellness clinics, aesthetic centers, and brands seeking high-quality reusable injection solutions.

Its ergonomic form factor, professional-grade manufacturing, and consistent injection performance make it suitable for a wide range of medications including insulin, GLP-1 analogues, peptides, hormones, and other 3mL cartridge-based formulations.

Product Overview

This reusable pen injector features a precision-engineered stainless-steel outer body, providing excellent durability, weight balance, and a premium tactile experience. The pen supports multi-dose delivery, with an adjustable dose dial that allows patients or clinicians to set and administer accurate doses with confidence.

A reinforced transparent window ensures clear visibility of the cartridge content, enabling users to monitor medication levels at any time.

Key Technical Features

1. Adjustable Dose Control (Fine-Step Mechanism)

• High-accuracy dose selector with firm tactile feedback

• Smooth rotational resistance for precise dose setting

• Supports customizable dose increments (IU/mg-based units optional)

• Designed to minimize accidental mis-dosing

2. Premium Full-Metal Body

• Constructed from high-strength medical-grade metal

• Provides improved stability, weight distribution, and grip comfort

• Resistant to impact, deformation, and daily wear

• Delivers a luxury-grade aesthetic for premium product lines

3. Advanced Internal Drive System

• Consistent pressure output for smooth and controlled injection

• Reduced injection force for easier administration

• Optimized plunger mechanism to improve medication delivery accuracy

• Long lifecycle mechanical components

4. Universal Cartridge Compatibility

Compatible with standard 3mL medication cartridges, commonly used for:

• Insulin

• Semaglutide, Tirzepatide, Liraglutide (GLP-1 series)

• Peptide therapies

• Aesthetic/dermatology treatments

• Hormone and wellness injections

Cartridge compatibility can be customized based on pharmaceutical client requirements.

5. Clear Dosage & Content Visibility

• Integrated viewing window for monitoring drug volume

• Transparent, wide-angle design for rapid cartridge inspection

6. Reusable & Cost-Efficient

• Designed for long-term repeated use

• Significantly reduces waste compared to disposable pens

• Ideal for clinics and patient programs focused on sustainability and cost control

User-Centered Design

✔ Ergonomic Shape

Comfortably fits the hand for stable operation during dose selection and injection.

✔ Enhanced Grip Sections

Textured and matte-finish surfaces on key areas for secure handling.

✔ Low-Force Injection Button

Large, responsive end-button design designed to minimize injection effort.

✔ Secure Pen Cap

Durable cap protects the needle and cartridge while maintaining a professional appearance.

Safety & Compliance

• Manufactured under ISO 13485 medical device quality management

• Biocompatible materials compliant with international standards

• Each unit undergoes mechanical testing for force, torque, and durability

• Compatible with standard single-use pen needles (31G, 29G, etc.)

Application Scenarios

• Weight-loss & metabolic treatment clinics

• Diabetes management programs

• Anti-aging, dermatology, and aesthetic medicine

• Peptide therapy providers

• Private label wellness brands

• Pharmaceutical companies requiring OEM/ODM injector pens

OEM / ODM Customization Options

We support full customization for brand owners and pharmaceutical partners:

► Customizable Options Include:

• Metal body color (silver, black, gunmetal, rose gold, etc.)

• Logo engraving or laser etching

• Dose increment customization

• Cap shape/color customization

• Cartridge compatibility adjustments

• Packaging design (single pen box, clinic kit, premium gift box)

• Instruction manual & artwork services

Specifications (Typical Model)

Why Clinics & Brands Choose This Pen

• High-end metal design enhances brand image

• Better durability and user experience than plastic pens

• Precise dosage control suitable for premium medications

• Ideal for long-term therapeutic programs

• Strong OEM/ODM capability for private label expansion